The bug

When attempting to bind certain keyboard keys to in-game controls, some nonstandard buttons will be displayed as "scancode.###", where "###" is a three-digit number.

Expected results

These buttons would have proper names displayed in the key binds menu representing what that button actually is.

Actual results

The name of the key is displayed as "scancode.###" instead of the actual key name.

Keys for which this happens

In the interests of brevity and to prevent excess notifications from being spammed at ticket followers, these are now tracked on a page on the Minecraft Wiki: https://minecraft.wiki/w/Java_Edition_untranslated_keys

You may view the history of this ticket for earlier results in the event of a wiki outage.

Further notes

A (potentially outdated) list of scancodes can be found at the following page (originally linked from MC-265449): https://www.win.tue.nl/~aeb/linux/kbd/scancodes-1.html#ss1.2